Stock Based Compensation (Tables)

6 Months Ended

Jun. 30, 2018

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Stock-based compensation expense and allocation by cost [Table Text Block]

Stock-based compensation expense is reflected in Cadence’s condensed consolidated income statements for the three and six months ended June 30, 2018 and July 1, 2017 as follows:

	Three Months Ended				Six Months Ended
	June 30, 2018		July 1, 2017		June 30, 2018		July 1, 2017
	(In thousands)
Cost of product and maintenance	$	606	$	491	$	1,196	$	1,020
Cost of services	884		717		1,747		1,478
Marketing and sales	8,268		6,237		15,882		12,245
Research and development	25,100		18,014		48,335		33,496
General and administrative	6,098		5,023		11,697		9,679
Total stock-based compensation expense	$	40,956	$	30,482	$	78,857	$	57,918